The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 1983
Filed:
May. 26, 1981
Applicant:
Inventors:
William Pickering, University Heights, OH (US);
David J Urbanc, Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
7386103 ; 73497 ; 73708 ; 364571 ; 364703 ;
Abstract
A compensated measurement system utilizing dual sensing elements (10, 12) and a single variable frequency oscillator (14). A common operative association between the sensing elements (10, 12) and the oscillator (14) is achieved by multiplexing. Temperature and supply voltage variations are compensated by generating an output (f.sub.0) which is proportional to the ratio of the two generated frequencies (f.sub.1, F.sub.2).